# Script optimized for building of GAEPyPortable
# Timestamp of compiled *.pyc will be set to source *.py
# -u: unlink compiled *.py
# -s: safe, dont unlink __init__.py

"""Module/script to "compile" all .py files to .pyc (or .pyo) file.

When called as a script with arguments, this compiles the directories
given as arguments recursively; the -l option prevents it from
recursing into directories.

Without arguments, if compiles all modules on sys.path, without
recursing into subdirectories.  (Even though it should do so for
packages -- for now, you'll have to deal with packages separately.)

See module py_compile for details of the actual byte-compilation.

"""

import os
import stat
import sys
import py_compile

__all__ = ["compile_dir","compile_path"]

def compile_dir(dir, maxlevels=10, ddir=None, force=0, unlnk=0, safe=0):
    """Byte-compile all modules in the given directory tree.

    Arguments (only dir is required):

    dir:       the directory to byte-compile
    maxlevels: maximum recursion level (default 10)
    ddir:      if given, purported directory name (this is the
               directory name that will show up in error messages)
    force:     if 1, force compilation, even if timestamps are up-to-date
    unlink:    if 1, unlink *.py after compilation

    """
    print 'Directory: %s' % (dir)
    try:
        names = os.listdir(dir)
    except os.error:
        print 'Cant list: %s' % (dir)
        names = []
    names.sort()
    success = 1
    for name in names:
        fullname = os.path.join(dir, name)
        if ddir:
            dfile = os.path.join(ddir, name)
        else:
            dfile = None
        if os.path.isfile(fullname):
            head, tail = name[:-3], name[-3:]
            # if tail == '.py':
            if tail == '.py':
                # cfile = fullname + (__debug__ and 'c' or 'o')
                cfile = fullname + 'c'
                ftime = os.stat(fullname)[stat.ST_MTIME]
                try:
                    ctime = os.stat(cfile)[stat.ST_MTIME]
                except os.error:
                    ctime = 0
                if (ctime < ftime) or force:
                    print 'Compile: %s' % (fullname)
                    try:
                        py_compile.compile(fullname, cfile, dfile)
                    except KeyboardInterrupt:
                        raise KeyboardInterrupt
                    except:
                        if type(sys.exc_type) == type(''):
                            exc_type_name = sys.exc_type
                        else: exc_type_name = sys.exc_type.__name__
                        print 'Sorry: %s: %s' % (exc_type_name, sys.exc_value)
                        success = 0
                        continue
                    # set timestamp from sourcefile (ftime)
                    try:
                        os.utime(cfile, (ftime,ftime))
                    #except WindowsError, e:
                    #    print '*** ERROR: %s\nWindowsError: %s' % (cfile, e)
                    except:
                        print '*** ERROR set utime ***: %s' % (cfile)
                        pass    # not serious
                # safety: preserve __init__.py from deletion
                if unlnk and ((not safe) or (name != '__init__.py')):
                    print 'Unlink: %s' % (fullname)
                    os.unlink(fullname)
        elif maxlevels > 0 and \
             name != os.curdir and name != os.pardir and \
             os.path.isdir(fullname) and \
             not os.path.islink(fullname):
            compile_dir(fullname, maxlevels - 1, dfile, force, unlnk, safe)
    return success

def compile_path(skip_curdir=1, maxlevels=0, force=0, unlnk=0, safe=0):
    """Byte-compile all module on sys.path.

    Arguments (all optional):

    skip_curdir: if true, skip current directory (default true)
    maxlevels:   max recursion level (default 0)
    force: as for compile_dir() (default 0)

    """
    success = 1
    for dir in sys.path:
        if (not dir or dir == os.curdir) and skip_curdir:
            print 'Skipping current directory'
        else:
            success = success and compile_dir(dir, maxlevels, None, force, unlnk, safe)
    return success

def main():
    """Script main program."""
    import getopt
    try:
        opts, args = getopt.getopt(sys.argv[1:], 'lfusd:')
    except getopt.error, msg:
        print msg
        print "usage: compileall [-l] [-f] [-u [-s]] [-d destdir] [directory ...]"
        print "-l: don't recurse down"
        print "-f: force rebuild even if timestamps are up-to-date"
        print "-u: unlink source after compile"
        print "-s: safe, dont unlink __init__.py"
        print "-d destdir: purported directory name for error messages"
        print "if no directory arguments, -l sys.path is assumed"
        sys.exit(2)
    maxlevels = 10
    ddir = None
    force = 0
    unlnk = 0
    safe = 0
    for o, a in opts:
        if o == '-l': maxlevels = 0
        if o == '-d': ddir = a
        if o == '-f': force = 1
        if o == '-u': unlnk = 1
        if o == '-s': safe = 1
    if ddir:
        if len(args) != 1:
            print "-d destdir require exactly one directory argument"
            sys.exit(2)
    success = 1
    try:
        if args:
            for dir in args:
                success = success and compile_dir(dir, maxlevels, ddir, force, unlnk, safe)
        else:
            success = compile_path()
    except KeyboardInterrupt:
        print "\n[interrupt]"
        success = 0
    return success

if __name__ == '__main__':
    sys.exit(not main())
  